usaco-practice/usaco/Mixing Milk/index.cpp

#include <iostream>
using namespace std;

int main() {
  freopen("mixmilk.in", "r", stdin);
  freopen("mixmilk.out", "w", stdout);

  int a_cap, a_val;
  cin >> a_cap >> a_val;
  int b_cap, b_val;
  cin >> b_cap >> b_val;
  int c_cap, c_val;
  cin >> c_cap >> c_val;

  for (int i = 0; i < 33; i++) {
    int a_diff, b_diff, c_diff;
    a_diff = abs(a_cap - a_val);
    b_diff = abs(b_cap - b_val);
    c_diff = abs(c_cap - c_val);

    if (b_diff >= a_val) {
      b_val += a_val;
      a_val = 0;
    } else {
      b_val = b_cap;
      a_val -= b_diff;
    }
    a_diff = abs(a_cap - a_val);
    b_diff = abs(b_cap - b_val);
    c_diff = abs(c_cap - c_val);

    if (c_diff >= b_val) {
      c_val += b_val;
      b_val = 0;
    } else {
      c_val = c_cap;
      b_val -= c_diff;
    }
    a_diff = abs(a_cap - a_val);
    b_diff = abs(b_cap - b_val);
    c_diff = abs(c_cap - c_val);

    if (a_diff >= c_val) {
      a_val += c_val;
      c_val = 0;
    } else {
      a_val = a_cap;
      c_val -= a_diff;
    }
    a_diff = abs(a_cap - a_val);
    b_diff = abs(b_cap - b_val);
    c_diff = abs(c_cap - c_val);
  }
  int a_diff, b_diff, c_diff;
  a_diff = abs(a_cap - a_val);
  b_diff = abs(b_cap - b_val);
  c_diff = abs(c_cap - c_val);

  if (b_diff >= a_val) {
    b_val += a_val;
    a_val = 0;
  } else {
    b_val = b_cap;
    a_val -= b_diff;
  }

  cout << a_val << endl << b_val << endl << c_val << endl;
}